Use of room temperature ionic liquids in gas sensor design

M.C. Buzzeo, Christopher Hardacre, R.G. Compton

Research output: Contribution to journalArticle

349 Citations (Scopus)

Abstract

The attainable steady-state limiting currents and time responses of membrane-covered and membrane-independent gas sensors incorporating different electrode and electrolyte materials have been compared. A new design comprising a membrane-free microelectrode modified with a thin layer of a room temperature ionic liquid is considered. While the use of ionic liquid as electrolyte eliminates the need for a membrane and added supporting electrolyte, the slower diffusion of analyte within the more viscous medium results in slower time responses. Such sensors do, however, have potential application in more extreme operating conditions, such as high temperature and pressure, where traditional solvents would volatise.
Original languageEnglish
Pages (from-to)4583-4588
Number of pages6
JournalAnalytical Chemistry
Volume76 (15)
Issue number15
DOIs
Publication statusPublished - 01 Jul 2004

ASJC Scopus subject areas

  • Analytical Chemistry

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    Buzzeo, M. C., Hardacre, C., & Compton, R. G. (2004). Use of room temperature ionic liquids in gas sensor design. Analytical Chemistry, 76 (15)(15), 4583-4588. https://doi.org/10.1021/ac040042w